Mazda Mazda6 Workshop Manual Supplement page 366

STEP
5 Inspect intake shutter valve and VSC valve
operations.
(See F2–229 ENGINE CONTROL SYSTEM
OPERATION INSPECTION)
Is there any problem?
6 Inspect guide blade valve operation.
(See F2–229 ENGINE CONTROL SYSTEM
OPERATION INSPECTION)
Is there any problem?
7 Visually inspect CKP sensor and teeth of pulse
wheel.
Are CKP sensor and teeth of pulse wheel okay?
8 Measure gap between CKP sensor and teeth of
pulse wheel.
Specification
1.5—2.5 mm {0.059—0.098 in}
Is gap within specification?
9 Visually inspect CMP sensor and teeth of pulse
wheel.
Are CMP sensor and teeth of pulse wheel okay?
10 Perform EGR system inspection.
Is EGR system okay?
11 Inspect VSC system operation.
Does VSC system operate properly?
12 Inspect hose bands between following parts:
• Turbocharger compressor housing and air
cleaner
• Turbocharger compressor housing and
charge air cooler
Are hose bands loose?
13 Inspect for improper operation, kinks, clogging or
disconnection on guide blade actuator.
(See F2–229 ENGINE CONTROL SYSTEM
OPERATION INSPECTION)
Is actuator okay?
14 Remove parts necessary to inspect
turbocharger.
Do not remove turbocharger.
Inspect if turbocharger compressor wheel is
bent, damaged, or interfering with housing on
vehicle.
Is there any problem?
F2–214
TROUBLESHOOTING
INSPECTION RESULTS
Yes Repair or replace as necessary.
No Go to next step.
Yes Repair or replace as necessary.
No Go to next step.
Yes Go to next step.
No Replace malfunctioning parts.
Yes Go to next step.
No Adjust CKP sensor position.
Yes Inspect following PIDs:
(See F2–65 PCM
• IAT
• MAP
• RPM
If PID value is not as specified, repair or replace
malfunctioning parts.
If PID value is okay, go to next step.
No Replace malfunctioning parts.
Yes Go to next step.
No Repair or replace malfunctioning part according to
EGR system operation results.
Yes Go to next step.
No Repair or replace malfunctioning part according to
VSC system operation inspection results.
Yes Retighten hose bands.
If concern is resolved, complete inspection.
If concern still exists, go to next step.
No Go to next step.
Yes Go to next step.
No Repair or replace as necessary.
If concern is resolved, complete inspection.
If concern still exists, turbocharger is okay.
Go to next step.
Yes Replace turbocharger.
No Go to next step.
ACTION
INSPECTION)